PBX PAX is a powerful collector for sulfide ores,Cu-Ni ... is a most powerful chemical reagent used as collector of Xanthate,widely used in the flotation treatment of sulfide ores,especially ... sulfide ore as well as gold mine associated with pyrite.PBX,PEX,PIBX.Storage:Keep stored in cool and dry environment ... immediately with plenty of water for at least 15 minutes. Potassium Amyl Xanthate PBX